Interferometric Differential High-Frequency Lock-In Probe for Laser-Induced Vacuum Birefringence

• URL: http://arxiv.org/abs/2410.23198v1
• Date: Wed, 30 Oct 2024 16:49:45 GMT
• Title: Interferometric Differential High-Frequency Lock-In Probe for Laser-Induced Vacuum Birefringence
• Authors: R. G. Bullis, U. D. Jentschura, D. C. Yost,
• Abstract summary: We propose a measurement of laser-induced vacuum birefringence through the use of pulsed lasers coupled to femtosecond optical enhancement cavities. This measurement technique features cavity-enhanced pump and probe pulses, as well as an independent control pulse.
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• Abstract: We propose a measurement of laser-induced vacuum birefringence through the use of pulsed lasers coupled to femtosecond optical enhancement cavities. This measurement technique features cavity-enhanced pump and probe pulses, as well as an independent control pulse. The control pulse allows for a differential measurement where the final signal is obtained using high-frequency lock-in detection, greatly mitigating time-dependent cavity birefringence as an important and possibly prohibitive systematic effect. In addition, the method features the economical use of laser power, and results in a relatively simple experimental setup.

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